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Display Menu in Structure Drawing

The Display menu options affect only the appearance or orientation of your current structure, not search results.

Menu option

What it does

Carbons

Changes the display of some carbon atoms in the current structure. Select any carbons that you wish to display differently and Click this item. A secondary pop-up appears allowing you to choose between Dots, Angle, or C symbols for any selected carbon atoms. Note that the display of all carbons can be changed using the Carbons option under Drawing Preferences.

Stereo

Adds a stereo label for display to any node that has one or more stereo bonds. Select the node and then Stereo. Click on Specific, followed by the label that you want to use. Stereo labels can be deleted using the Eraser Tool, or moved using the Lasso Tool.

Show VPA

Displays the potential connection sites of a variable positioned group on a ring system.

Show Node Numbers

Replaces all nodes with a node number. Node numbers are assigned in the order nodes are placed on the screen.  Select Show Node Symbols a second time to turn this display off.

Ring Circles

Displays alternating single and double bonds in six membered rings as a circle inside the ring.

Show Reactions

Displays Reaction information: Reaction Roles, Reaction Sites, Reaction Mapping, and Atom Mapping.

Show Query Attributes

Displays activated viewer for the Query Attributes, which displays the attributes for a node or bond at the current cursor position. The display changes as the cursor is moved over different nodes or bonds.

Smooth

Allows you to improve the appearance of rings or chains drawn freehand. If you do not like the appearance of the smoothed structure use the Undo command.

Expand

Enlarges and centers the drawing on the screen. If the structure expands out of the current viewing port, use the scroll bars to view it. One or more discrete fragments can be selectively expanded. Use the Selection tool to select the fragment(s) before using the Expand option.

Contract

Reduces the size of the drawing on your screen and centers it. One or more discrete fragments can be selectively contracted. Use the Selection tool to select the fragment(s) before using the Contract option.

Reverse Shortcut

Displays a shortcut in its reverse form. For example, an "OH" group with a horizontal bond extending to the right is usually drawn as "HO". Select the shortcut to be reversed then select Reverse Shortcut from the Display menu. Where possible, the bond is drawn to the relevant node in the shortcut.

Rotate

Rotates a structure about an atom or bond on the screen. Select the structure or fragment that you want to rotate. Then choose Rotate command.  The cursor changes displaying a curved arrow around a dot which shows the direction of rotation. Click and move the cursor in a clockwise or counter clockwise direction. The fragment will be rotated in that direction about a central axis.

Flip Fragment Horizontal

Makes a left-right rotation of a structural fragment through 180 degrees. The structure is rotated about a vertical axis creating a mirror image.

Flip Fragment Vertical

Makes an up-down rotation of a structural fragment through 180 degrees. The structure is rotated about a horizontal axis creating a mirror image.

Show Grid

Show a grid in the structure drawing window.

Snap to Grid

Select a set of nodes or a fragment, then use this command to snap the nodes to the nearest grid position.

Snap to Compass

Select a set of bonds or a fragment and use this command to snap the bonds to the nearest compass position.

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